Free tier available; Pro is a $79.99/year license covering unlimited sites (7-day money-back guarantee). AI usage costs are billed separately by the site owner's own OpenAI/Claude/Gemini API key.
WP AI Explainer is a WordPress plugin that lets site visitors highlight any confusing word or phrase on a page and instantly see a plain-English explanation in a tooltip, without opening a new tab or leaving the site. Explanations are generated using the site owner's own AI provider API key (OpenAI, Anthropic Claude, or Google Gemini are supported, across eight underlying models), and results are cached so the same term is never billed twice. The free version installs like any standard WordPress plugin (Plugins > Add New > Upload Plugin) and works with any properly coded theme via standard WordPress hooks, without altering the site's existing content. The paid Pro tier ($79.99/year, one license covers every site the buyer owns) adds bulk-scanning of an entire post archive, automatic scanning of new content on publish, one-click conversion of frequently-highlighted terms into full blog posts (with auto-generated SEO titles, meta descriptions, and featured images), five editable reading levels, brand-matched tooltip styling, and a dashboard that shows which terms readers struggle with most. Content is available in English, Spanish, German, French, Hindi, Chinese, and Japanese. Pro ships with a 7-day money-back guarantee.
Key Features
Highlight-to-explain AI tooltips — Visitors highlight any confusing word or phrase and see a plain-English explanation in a tooltip, without leaving the page.
Works with any WordPress theme — Uses standard WordPress hooks so it works with any properly coded theme without altering existing content.
Eight AI models, three providers — Supports OpenAI, Anthropic Claude, and Google Gemini; switch providers to match tone or budget, with new models added as they launch.
Turn questions into full blog posts — One-click blog creation from trending highlighted terms, with auto-generated SEO title, meta description, focus keyword, and featured image.
Find every term worth explaining — Bulk-scan any batch of posts or pages, auto-scan new content the moment you publish, and show clickable highlights inline for readers.
See what readers struggle with — Monitor, search and filter trending selections; edit explanations across five reading levels; promote a trending term straight into a blog post.
Match your brand exactly — Control tooltip, button and reading-slider color, toggle button position and popup width, and edit reading-level prompts and labels.
Holds up on a site with real traffic — Response caching with configurable duration, per-user rate limits for logged-in and anonymous traffic, and a server cron / background job queue.
Pros & Cons
Pros
Free tier installs directly from the WordPress plugin uploader and works with any properly coded theme via standard WP hooks
Supports eight AI models across three providers (OpenAI, Claude, Gemini), letting site owners match tone or control cost
Explanations available in seven languages (English, Spanish, German, French, Hindi, Chinese, Japanese)
Response caching means a repeated term is never billed twice, keeping AI usage costs low
Pro is one annual license that covers every site the buyer owns, with no per-site upsell
Pro includes a 7-day money-back guarantee
Cons
Requires bringing your own AI provider API key, so usage cost sits outside the plugin's own price and scales with traffic
Bulk-scanning, blog-post generation, reading-level editing, and brand styling are Pro-only, gated behind the $79.99/year license
Built specifically for WordPress; no equivalent version exists for other CMS platforms
No changelog, version history, or public source repository was found in the crawled site, limiting technical due-diligence before purchase